Dielectric Function for Gold in Plasmonics Applications: Size Dependence of Plasmon Resonance Frequencies and Damping Rates for Nanospheres.
TLDR
The improved, simple dielectric function for gold is given which accounts for the frequency dependence of the interband transitions over 1.8 eV and, in addition, for the finite size effects in gold nanoparticles.Abstract:
Realistic representation of the frequency dependence of dielectric function of noble metals has a significant impact on the accuracy of description of their optical properties and farther applications in plasmonics, nanoscience, and nanotechnology. Drude-type models successfully used in describing material properties of silver, for gold are known to be not perfect above the threshold energy at 1.8 eV. We give the improved, simple dielectric function for gold which accounts for the frequency dependence of the interband transitions over 1.8 eV and, in addition, for the finite size effects in gold nanoparticles. On that basis, we provide the improved characterization of the spectral performance of gold nanoparticles. Furthermore, we give the direct size dependence of the resonance frequencies and total damping rates of localized surface plasmons of gold nanoparticles (retardation effects are taken into full account) in diverse dielectric environments. The results are compared to the data obtained experimentally for gold monodisperse colloidal nanospheres, as well with the experimental results of other authors.read more
Citations
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Nonlinear optical effects in epsilon-near-zero media
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Plasmon-Enhanced Photoelectrochemical Water Splitting for Efficient Renewable Energy Storage.
Luca Mascaretti,Aveek Dutta,Štěpán Kment,Vladimir M. Shalaev,Alexandra Boltasseva,Radek Zbořil,Alberto Naldoni +6 more
TL;DR: The reported plasmonic effects are outlined, such as resonant energy transfer, scattering, hot electron injection, guided modes, and photonic effects, as well as the less investigated catalytic and thermal effects used in PEC water splitting.
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Shape Effect on the Refractive Index Sensitivity at Localized Surface Plasmon Resonance Inflection Points of Single Gold Nanocubes with Vertices.
TL;DR: This work demonstrated an alternative method to improve the efficiency of the sensors by focusing on homogeneous LSPR scattering inflection points (IFs) of single gold nanoparticles with a single resonant mode, and provided a deeper insight into the RI sensitivity of homogeneousLSPR IFs of AuNCs with vertices for their use in L SPR-based biosensors.
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Reversibly pH-responsive gold nanoparticles and their applications for photothermal cancer therapy.
TL;DR: P pH responsive gold nanoparticles which are designed to aggregate in acidic condition similar to cancer environment and returned to its original disassembled states in a physiological pH are reported.
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Fundamental Limitations to Plasmonic Hot-Carrier Solar Cells
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